Fits the Autotrol 255 valve.
This new 256 By Pass is also backward compatible to the older Model 155 Valves.
The bypass valve assembly comes with new o-rings ( the 3 that go between the By Pass and the Valve / Tank Adapter ) and 4 screw bolts with nuts.

The Adapter Kit ( see related items ) that attaches the By Pass to your house pipes ( 3/4" , 1" in Copper or PVC ) is sold separately, if this is a New Installation.
But if replacing an existing By Pass that already has Adapter Nut and Tubes, then you may want to include ( 2 ) of the Gaskets ( 54F ) to put inside your large adapter nuts ( reason being, the old ones may be dried out and not seal well when reconnecting your old Adapter Nut and Tubes to your new By Pass.


G.E. Osmonics now offers the rugged Autotrol 256 bypass valve.
The 256 bypass allows the control valve to be isolated from water flow, but still provide water to the home.
This is helpful during the routine maintenance of the valve.
Each 255 valve is available with the 256 bypass valve option.